Discrete Mathematics Textbooks

• Buy any book marked "Guaranteed Cash Back"
• Sell it back to us in good condition at the end of the semester
• Get 50% of the purchase price back!

• Books purchased between June 1 and November 30 must be received back at our warehouse by December 31 of the same year.
• Books purchased between December 1 and May 31 must be received back at our warehouse by the following June 30.
• Guaranteed Cash Back books purchased today must be returned by: 6/30/2013

Free Shipping
Get Free Shipping on orders over $25 (not including Rental and Marketplace). Order arrives in 5-10 business days.

Need it faster?
We offer fast, flat-rate expedited shipping options.

• Water damage
• Missing or torn pages
• Missing or torn cover
• Torn or damaged binding
• Excessive note-taking/hi-lighting
• A broken spine

Being online is not required for reading an eTextbook after successfully downloading it. You must only be connected to the Internet during the download process.

Minimum Requirements:

• Windows XP, Windows Vista or Mac OS X 10.3 or above
• At least 280 MB RAM, a 600 mHZ processor and 110 MB of hard drive space
• 1024x768 (or larger) screen resolution